Mastech MS2208 User manual

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Contents
Safety Instructions .................................................. 2
Safety Sign ............................................................... 3
General Description................................................. 3
Features .................................................................... 4
Appearance .............................................................. 6
Knob Switch Operations ......................................... 8
Button Switch Operations .................................... 10
LCD DISPLA ......................................................... 12
Hz ............................................................................ 13
Instruction Manual ................................................ 15
AC voltage (V) measurement .............................. 15
AC CURRENT measurement ................................ 17
Test of single-phase circuit .................................. 19
cosΦ, sinΦ, and phase angle measurement ..... 22
Single-phase three-line circuit ............................. 22
Input Voltage and Current ................................... 23
During power measurement, if input voltage is over
600 (RMS) or current over 200 A (RMS), “OL”
symbol will be displayed and bar symbol shown in
full scale. ................................................................. 23

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Backlight ................................................................. 23
Auto Power Off ...................................................... 24
Power curve diagram ............................................ 24
Battery-low Indication .......................................... 26
General specification ............................................ 27
Technical specification .......................................... 29
Accessories ............................................................. 32

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Please carefully read the instruction manual before
using the tester, and pay special attention to
“Warning” content. Please follow instructions under
“Warning”.
1. Please be very careful when test voltage is
higher than AC 30 , and do keep in mind that
your finger shall not exceed the hand-shielding
part of the test probe.
2. Do not measure voltage which is higher than the
allowed input limit.
3. Before use, please check the meter and test
probe; do not carry out testing in case the test
probe is naked, tester housing is damaged, or
there is no LCD display, etc..
4. It meets requirements of safety standards only
when the meter is used together with the
supplied test probes. In case the test probe is
damaged and needs replacement, it is required to
replace it with a test probe of the same model

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and identical electrical specifications.
5. Please never carry out any voltage measurement
whenever the test probe is inserted in any
current outlet.
6. Please do not expose the meter to strong light,
high temperature, or dampness.
Before use, please carefully read this
instruction manual. Especially safety
contents!
Safety Instructions
The digital power meter is designed and
manufactured in accordance with international
standard, IEC61010-1, and international safety
specification, IEC1010-2-032, and the meter strictly
follows the safety standard of double-insulation AC
600 CAT III.

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Safety Sign
Important safety signs; please refer to
instruction manual
High voltage hazard
Earthing
Double insulation (Category-II safety
equipment)
Battery low Indicator
General Description
The digital power meter is a hand-held intelligent
harmonic power tester, with both functions of digital
current testing and power testing. The tester is
comprised of three channels including voltage,
current, and power as well as a micro single chip
system, and it is equipped with a powerful software
for measurement and data processing functions; it can

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measure, calculate, and display voltage, current,
active power, power factor, apparent power, passive
power, frequency, harmonic parameters, with stable
performance and operation convenience. The meter is
especially suitable for the measurement and
examination of on-site power equipment and
power-supplying circuits; with hand-held clamp
structure, small volume, and light weight, it can be
easily carried by the user, which makes it easy and
fast for doing measurement. For measurement of
sing-phase power, The meter is your ideal choice.
Features
1. The meter can be used for testing power, voltage,
current, peak value, phase, frequency, power
factor, phase angle, and reaction factor, etc. of
single-/three-phase circuit; automatic phase
sequence testing is possible for 3-phase
measurement.

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2. True effective value measurement: accurate
measurement is possible even with serious
distortion in current waveform.
3. Low-consumption high-speed single-chip
microprocessor is employed and sophisticated
algorithm is applied, as a result, results can be
obtained rapidly and precisely, and up to 20
harmonics and distortion value thereof can be
measured.
Hand-held, clamp-type structure, with light weight,
convenient for carry-on.

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Appearance
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2
3
4
5
7
8
m
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1. Current clamp size：Ф26mm
2. Function-switching knob :Rotation knob for
selecting different measuring function
3. Function-selection button: Button for operating
the measuring functions
4. Input terminal
T
erminal
Function
FunctionFunction
Function
V Input terminal for measuring the first
phase; use yellow test probe for
connection
COM Input terminal for measuring the 2nd
phase; use black test probe for
connection. Common terminal: ground
input terminal (earthing) for all
measuring functions; use black test probe
for connection.
5. LCD display :4-digit digital display; 7-section

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LCD for displaying measurement operation
function, test result, and unit sign.
6. H/ 键：HOLD button :DATA HOLD
button; press down HOLD button, and the last
reading will be held and displayed on the display,
and “HOLD” symbol will be shown; press
HOLD button again, and the meter will switch
back to normal measurement mode.
7. Trigger :Press down the trigger, and the clamp
will open; release it, and the clamp will close.
8． LED Lamp
In power and current mode ,press button
open or close Lamp
Knob Switch Operations
The function-switching knob is used for powering-on
and for switching to any measurement function in the
following table.